Develop Bugs

[Q] Cannot mount bricked nexus 7 2013 storage

Hello all,
I'll give a quick introduction of what my situation is, and then my problem:
I have a Nexus 7 32g wifi model with:
Product name - flo
Variant - flo 32g
HW version - rev_e
Bootloader version - flo-04.02
Carrier info - none
signing - yes
secure boot - enabled
LOCK STATE - locked
All of the following attempts are made by my macbook air - I can try with my windows machine but I personally do not think that this will help. please tell me if you believe that using a windows machine will fix it and I will go with it.
Recently I was using my nexus as an ftp server and was transferring some videos to it. when I left the shower I noticed it was stuck on the google logo, so I left it in case it was frozen etc. I then went to work and came back around 11 hours later to see it on the same logo (it was charging so naturally didn't run out of battery and go to a blank screen).
I therefore decided to see what was going on, clearly it wouldn't boot. I went into the boot loader and also successfully went into recovery mode. Following some instructions from google, the first thing to do was to wipe the cache partition. This returned the following:
--Wiping cache...
E: failed to mount /cache (Invalid argument)
Formatting /cache
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
Cache wipe complete.
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
E: Failed closing /dev/block/platform/msm_sdcc.1/by-name/misc
(I/O Error)
E: failed to mount /cache (Invalid argument)
Click to expand...
Click to collapse
When I tried to wipe the data, it returned the following:
-- Wiping data...
Formatting /data...
E: failed to mount /cache (Invalid argument)
Formatting /cache...
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
Data wipe complete.
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
E: Failed closing /dev/block/platform/msm_sdcc.1/by-name/misc
(I/O Error)
E: failed to mount /cache (Invalid argument)
Click to expand...
Click to collapse
Following this I tried the 'apply update from ADB' option and this also was unsuccessful. After adb sends the image (and I've tried a few such as the stock one from google and CM10) to the nexus 7, my nexus says the following:
Now send the package you want to apply
to the device with "adb sideload <filename>"...
E: failed to mount /cache (Invalid argument)
E: failed to set up expected mounts for install; aborting
Installation aborted.
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E: failed to mount /cache (Invalid argument)
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
E: Failed closing /dev/block/platform/msm_sdcc.1/by-name/misc
(I/O Error)
E: failed to mount /cache (Invalid argument)
Click to expand...
Click to collapse
I returned to google to see what I can find and, although I can't find an identical situation to mine, I saw suggestions to unlock the bootloader, so I used fastboot with the following command:
./fastboot oem unlock
Click to expand...
Click to collapse
My terminal was stuck on "erasing userdata" for a very long time. judging by some of the screenshots I've seen, this shouldn't take more than a couple of minutes - I waited approximately 2 hours and then restarted my nexus.
I think it's worth mentioning that fastboot can see my device (matching my serial no) but running the adb devices command shows nothing under the list of devices. I have also tried to flash a recovery image, but this was also unsuccessful. I know there's a flash.bat file as part of the stock compressed folder, however I haven't touched that yet.
As a result, I think that the issue is with my storage and that it is not mountable. I may be incorrect here but I tried to remount the device through ADB - as mentioned above however, it can't detect the device so this never worked. I do not know how to get mount this using fastboot (I took a look at fastboot help but didn't find anything for that) so I'm not sure where to go now.
I believe that my device is now out of warranty (or very close to it) and I don't think the department store I purchased this from would help me so I'd rather not go down that route.
I hope the information I gave above was sufficient and I'd appreciate any input you have for this. I'm pretty average at terminal commands and have a good understanding of Unix, however I'm not an expert, so excuse me if I'm missing something that is under my nose.
Many thanks,
Ehab

Have you tried different USB cables? USB ports? Check if there is an update for the sdk available? If all else fails, try the Windows machine.

I was using the Twitter app and then my N7 rebooted. Now I have the same error on my device!
Do you think the internal drive is dead?
I need to check my warranty now!

Hello all,
So I tried the above but no success. This leads me to believe even further that it's an issue with unmounted storage. Has anyone had anything like this?
Thanks,
Ehab

!!Need Help!! Error logs Note GT 7100

I have a Samsung GT 7100 Note 2 with a lot of Errorlogs after Power ON
E: failed to mount /efs (no such file or directory)
E: cant mount /cache/recovery/last recovery
E: failed to mount /data (no such file or directory)
E: cant mount /data/log/recovery_log.txt
E: failed to mount /system (no such file or directory)
E: failed to mount/ cache (no such file or directory)
E: cant mount /cache/recovery/log
E: cant open /cache/recovery/log
E: failed to mount /cache/ (nsfod)
E: cant mount /cache/recovery/last_log
E: cant open /cache/recovery/last_log
E: failed to mount /cache/recovery/last install
E: cant mount /cache/recovery/last install
and more...
If i try to hardreset or cache partition
E: failed to mount /cache Block device required ???
E: format_volume/make_extf4fs/dev....
I installed a new Rom over Odin sucessfull and with a ,,PASS,,
but the Phone still dont boot.
Maybe the internal SD is broken???
Someone can help me?
It would be great if someone can explain and help me, if possible step by step.
my Email is [email protected]
BIG THANKS!

error need help
I have a Samsung GT 7100 Note 2 with a lot of Errorlogs after Power ON
E: failed to mount /efs (no such file or directory)
E: cant mount /cache/recovery/last recovery
E: failed to mount /data (no such file or directory)
E: cant mount /data/log/recovery_log.txt
E: failed to mount /system (no such file or directory)
E: failed to mount/ cache (no such file or directory)
E: cant mount /cache/recovery/log
E: cant open /cache/recovery/log
E: failed to mount /cache/ (nsfod)
E: cant mount /cache/recovery/last_log
E: cant open /cache/recovery/last_log
E: failed to mount /cache/recovery/last install
E: cant mount /cache/recovery/last install
and more...
If i try to hardreset or cache partition
E: failed to mount /cache Block device required ???
E: format_volume/make_extf4fs/dev....

Was the phone dropped? Tried flashing a stock rom with Odin?

Note 2 stuck on samsung galaxy note 2 logo.

My note 2 is struck on samsung galaxy note 2 logo and it is not going further. I am able to go on download mode but when i go on stock recovery i get
E:failed to mount /efs (No such file or directory)
E:failed to mount /system ((No such file or directory))
# MANUAL MODE #
--Appling Multi-CSC
E:failed to mount /system (No such file or directory)
can't mount '/system' (No such file or directory)
E:failed to mount /cache (No such file or directory)
can't mount '/cache' (No such file or directory)
E:failed to mount /cache (No such file or directory)
E:can't mount /cache/recovery/last_recovery
E:failed to mount /data (No such file or directory)
E:can't mount /data/log/recovery_log.txt
E:failed to mount /data (No such file or directory)
E:can't mount /data/log/emmc_checksum_log.txt
E:failed to mount /system (No such file or directory)
E:failed to mount /cache (No such file or directory)
E:can't mount /cache/recovery/log
E:can't open /cache/recovery/log
E:failed to mount cache (No such file or recovery)
E:Can't mount /cache/recovery/last_log
E:can't open /cache/recovery/last_log
E:failed to mount /cache (No such file or recovery)
E:can't mount /cache/recovery/last_install
E:Can't open /cache/recovery/last_install
E:failed to mount /cache (No such file or recovery)
Please help. My friend tried flashing through odin but it didnt work. Please help

What did you friend try to flash? Which note 2 model do you have ?

audit13 said:
What did you friend try to flash? Which note 2 model do you have ?
Click to expand...
Click to collapse
My model is gt n7100 samsung galaxy note 2. I bought it in India. My phone is rooted. I dont know which rom he flashed but he tried 3-4 roms for note 2 but none works.

Try flashing the latest n7100 ROM from sammobile.com using Odin.

Stuck at Samsung galaxy note II GT-N7105T logo & E: failed to mount /system

My phone is Samsung galaxy note II GT-N7105T
Phone is stuck at Samsung galaxy note II GT-N7105T logo
can start the phone in download mode and in recovery mode.
When I start the phone in recovery mode i get the following errors:
E: failed to mount /system (No such file or directory)
E: Can´t mount /system(No such file or directory)
E: failed to mount /cache (No such file or directory)
E: Can´t mount /cache/recovery/command
E: failed to mount /efs (No such file or directory)
E: failed to mount /system (No such file or directory)
# Manual Mode#
Applying Multi-CSC....
E: failed to mount system (No such file or directory)
Can´t mount ' /system ' (No such file or directory)
E: failed to mount /data (No such file or directory)
Can´t mount '/data ' (No such file or directory)
E: failed to mount /system (No such file or directory)
E: failed to mount /cache (No such file or directory)
E: Can´t mount /cache/recovery/log
E: Can´t open /cache/recovery/log
E: failed to mount /cache (No such file or directory)
E: Can´t mount /cache/recovery/last_log
E: Can´t open /cache/recovery/last_log
E: failed to mount /cache (No such file or directory)
E: Can´t mount /cache/recovery/last_install
E: Can´t open /cache/recovery/last_install
I have tried to wipe cache partition and do a data/factory reset, but without any luck.
When i try to do a data/factory reset it says:
-- Wiping data...
Formatting /data...
E:format_volume: make_extf4s failed on /dev/block/mmcblk0p16
Formatting /cache...
E:format_volume: make_extf4s failed on /dev/block/mmcblk0p12
Data wipe complete
E:failed to mount /cache (Block device required)
E:Can´t mount /cache/recovery/log
E:Can´t open /cache/recovery/log
E:failed to mount /cache (Block device required)
E:Can´t mount /cache/recovery/last_log
E:Can´t open /cache/recovery/last_log
E:failed to mount /cache (Block device required)
E:Can´t mount /cache/recovery/last_install
E:Can´t open /cache/recovery/last_install
I hope someone here can tell me what I can try out to fix it, since I have no clue what caused this or what I can do about it. Flashed Samsung note 2 Stock rom with ODIN many times and used different version of but didn't work.

The stock rom doesn't flash in Odin? If not, what is the Odin error?

audit13 said:
The stock rom doesn't flash in Odin? If not, what is the Odin error?
Click to expand...
Click to collapse
Whenever i flash stock firmware with odin is shows green and pass but the phone is still stuck at Galaxy note 2 logo and the recovery still shows the above error.

got the same problem wiht not fail odin
got the same problem with fail odin

RP SWREV: A2
has been shown

After flashing the full rom, did you do a factory reset before booting the stock rom for the first time?

audit13 said:
After flashing the full rom, did you do a factory reset before booting the stock rom for the first time?
Click to expand...
Click to collapse
Whenever I open recovery i get failed to mount system data ......... So performing full data wipe is useless. I have tried.

abood101 said:
RP SWREV: A2
has been shown
Click to expand...
Click to collapse
NO it does not show that error.

Can not create '/usb-otg' error while rooting HTC Desire 826

Hello Friends,
I'm trying to root my HTC Desire 826.
1. I have Unlocked the bootloader.
2. Installed TWRP 2.8.5.0
3. Boot to recovery. Install -> SuperSU-v2.46
4. While installing SuperSU-v2.46.zip (from sdcard). I got the following error (I have not included the complete logs below as they are large in size. Please let me know if you require complete logs):
E:Can not create '/usb-otg' folder.
E:Error creating fstab
Updating partition details...
E:Unable to stat '/data/misc/adb'
E:Unable to stat '/data/misc/bluedroid'
.
.
.
E:error opening '/data/dalvik-cache'
E:error: Permission denied.
.
.
.
E:Unable to mount '/external_sd'
E:error opening '/data/security'
E:error: Permission denied
.
.
E:Error creating fstab
Please help!!!
Thanks